In his first-ever interview, the sole Australian survivor of the Waco siege has revealed to 60 Minutes what really took place during the 51-day stand-off, and why he believes crazed cult leader David Koresh will one day return to Earth as the son of God.

She used the cream for a week and says the results were life-changing.

"Within a day, I could just put it on my knuckles and joints and get instant relief," she said.

Researchers believe the cream could have fewer side effects than some current treatments and say it could help sufferers of all types of arthritis; however, the cream still needs to be tested on a larger contingent of patients to prove its effectiveness.

Their focus is now on the next trial, which will look at whether dermatitis patients will also experience the same results.

"You think dermatitis might be quite different to arthritis but funnily enough those cytokines (proteins that regulate inflammatory responses) and those inflammatory mechanisms cross both. So what we're very excited about is a drug that can potentially have a broad range of applications," Dr Ludbrook said.